Cycling glasses are not just a fashion accessory. Apart from the obvious job of protecting the eyes against the sun’s rays, they also keep the eyes safe from flying objects, cold penetrating wind and in low light conditions certain lenses can actually help enhance vision. Comfort and shape is a key factor as certain styles fit certain face shapes better but performance should be the determining factor as there’s no point having a nice looking pair of glasses if you can’t see out of them properly. Many glasses have the option of allowing you to change the lens according to weather conditions making them more versatile but against all this, will that frame colour clash with the rest of your kit?